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Respiration
Practice Questions

55 CIE IGCSE Biology questions on Respiration, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Respiration.

Try 2 sample questions on Respiration

Question 1 · 1 mark · Difficulty 1/3

Where does gas exchange occur in humans?

  1. Alveoli in the lungs
  2. Bronchi
  3. Diaphragm
  4. Trachea
Show answer & explanation
✓ Answer: A — Alveoli in the lungs
Alveoli are tiny air sacs at the ends of bronchioles. O₂ diffuses from alveoli into blood; CO₂ diffuses from blood into alveoli.
Question 2 · 1 mark · Difficulty 1/3

Which gas must be supplied to a cell for aerobic respiration to take place?

  1. Hydrogen
  2. Carbon dioxide
  3. Nitrogen
  4. Oxygen
Show answer & explanation
✓ Answer: D — Oxygen
Aerobic respiration uses oxygen to release energy from glucose. Carbon dioxide is a product, not a reactant.
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20 questions · 25 min · free

CIE IGCSE Biology: Respiration FAQ

Is Kramizo free for CIE IGCSE students preparing for Biology?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Respiration practice with other Biology topics or even switch to a totally different CIE subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Respiration questions aligned to the official CIE IGCSE Biology syllabus?
Every question is written against the published CIE IGCSE Biology specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CIE paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CIE.
How is Respiration typically tested on CIE IGCSE Biology papers?
Respiration appears across multiple question types on real CIE IGCSE Biology papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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